X-Git-Url: https://ruderich.org/simon/gitweb/?p=coloredstderr%2Fcoloredstderr.git;a=blobdiff_plain;f=configure.ac;h=ef95ae95025c420b98cb2d2a13e45e43f87bdb55;hp=f4154bd04a9b25694b1ed59fac63d4ebe9becc33;hb=f3c734eb7d1759d67e64614a6285865e6edac0bf;hpb=357a499884543ec285238c9ec6c53565fa4d5b48

diff --git a/configure.ac b/configure.ac
index f4154bd..ef95ae9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,7 +36,9 @@ if test "x$GCC" = xyes; then
     CFLAGS="-Wall -Wextra -Wconversion $CFLAGS"
 fi
 
-AC_CHECK_HEADERS([fcntl.h error.h])
+AC_CHECK_HEADERS([err.h error.h])
+AC_CHECK_HEADERS([fcntl.h],
+                 [],[AC_MSG_ERROR([header is required])])
 
 AC_TYPE_PID_T
 AC_TYPE_SIZE_T
@@ -45,8 +47,19 @@ AC_TYPE_SSIZE_T
 AC_C_INLINE
 AX_C___ATTRIBUTE__
 
+AC_CHECK_MEMBER([struct _IO_FILE._fileno],
+                [AC_DEFINE([HAVE_STRUCT__IO_FILE__FILENO], 1,
+                           [Define to 1 if `_fileno' is a member of `struct _IO_FILE'.])],
+                [],[[#include <libio.h>]]) dnl ' fix for vim syntax coloring
+
 AC_FUNC_FORK
-AC_CHECK_FUNCS([dup2 memmove setenv strdup])
+AC_CHECK_FUNCS([memmove setenv],
+               [],[AC_MSG_ERROR([function is required])])
+AC_CHECK_FUNCS([execvpe])
+dnl These are not in POSIX.
+AC_CHECK_FUNCS([fwrite_unlocked fputs_unlocked fputc_unlocked])
+dnl Internal functions in libc implementations which must be hooked.
+AC_CHECK_FUNCS([__overflow])
 
 dnl Thanks to gperftools' configure.ac (https://code.google.com/p/gperftools).
 AC_MSG_CHECKING([for __builtin_expect])
@@ -61,17 +74,18 @@ AC_SEARCH_LIBS([dlsym], [dl], [], [AC_MSG_ERROR([dlsym() is required])])
 AC_ARG_ENABLE([warnings],
               [AS_HELP_STRING([--enable-warnings],[enable warning output])],
               [if test "x$enableval" = xyes; then
-                   AC_DEFINE([WARNING], 1, [Define to enable warning output.])
+                   AC_DEFINE([WARNING], 1, [Define to 1 enable warning output.])
                fi])
 AC_ARG_ENABLE([debug],
               [AS_HELP_STRING([--enable-debug],[enable debug output])],
               [if test "x$enableval" = xyes; then
-                   AC_DEFINE([DEBUG], 1, [Define to enable debug output.])
+                   AC_DEFINE([DEBUG], 1, [Define to 1 enable debug output.])
                    dnl DEBUG implies WARNING
                    AC_DEFINE([WARNING], 1)
                fi])
 
-dnl Used in tests/Makefile.am to build the test only if error() is available.
+dnl Used in tests/Makefile.am to build the test only if function is available.
+AM_CONDITIONAL([HAVE_ERR_H],[test "x$ac_cv_header_err_h" = xyes])
 AM_CONDITIONAL([HAVE_ERROR_H],[test "x$ac_cv_header_error_h" = xyes])
 AM_CONDITIONAL([HAVE_VFORK],[test "x$ac_cv_func_vfork_works" = xyes])